K193948
Spring Brake (S-Cam)
Bendix

The spring brake actuation unit is a self‑contained, high‑reliability actuator designed for S‑Cam braking configurations. Its dimensioning mirrors common serviceable valve trains, with a 3‑inch stroke and 45‑degree port orientation that supports flexible routing and efficient packaging in tight engine bays or trailer assemblies. The stud lengths and thread sizes (5/8‑11 UNC) provide a secure mounting cadence, while the welded clevis and 30/30 chamber type deliver a stable, fatigue‑resistant interface for repeated engagement and release cycles. Operating temperatures from ‑40°F to 175°F reflect real‑world transit conditions, ensuring consistent performance from arctic to desert environments. In practice, this unit ensures controlled brake application, rapid build‑up of brake force, and a reliable hold during parking operations, reducing brake drag and improving overall system safety. VMRS 013-004-027 and category 41368 situate it within the S‑Cam spring brake family, reinforcing compatibility with standard Bendix control components and maintenance practices.